Shear front feed system

Patent 4456116 Issued on June 26, 1984. Estimated Expiration Date:

June 28, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

2566417

2848095

3044216

3247949

3295660

3670864

Conveyors
Patent #: 4036345
Issued on: 07/19/1977
Inventor: Webb

Shear front feed system Patent #: 4068753
Issued on: 01/17/1978
Inventor: Jarman

Inventor

Jarman, David J.

Application

No. 06/393060 filed on 06/28/1982

US Classes:

198/414, By turntable which lifts, turns and lowers item(s)193/35MD, Multidirectional198/456, By laterally or vertically moving successive items in longitudinally moving stream271/248, Against aligner adjacent side edge of sheet271/251, By oblique conveyor414/677, FEED TABLES FOR SHEARING MACHINES83/418, With additional mans to engage work and orient it relative to tool station83/732With means for transverse positioning of work on a moving conveyor

Examiners

Primary: Butler, Douglas C.
Assistant: Barlow, James E.

Attorney, Agent or Firm

Alter; Irwin C.

International Classes

B65G 47/53 (20060101)
B65G 47/54 (20060101)
B65H 9/00 (20060101)
B65G 13/00 (20060101)

Abstract

A front feed system that includes powered rollers for feeding sheet metal into the front of a shear. In one embodiment, the system uses ball transfer apparatus for facilitating feeding the sheet metal at various angles to the shear blade as desired by the operator. The transfer apparatus may then be lowered to rest the oriented sheet metal on the rollers for delivery to the shear. In a second embodiment, a turntable is positioned proximate the shear to further facilitate final orientation of the sheet material to be sheared. In a third embodiment, the sheet metal is automatically forced against a squaring arm on the shear to assure cuts perpendicular to the edge of the sheet metal, whether the sheet is positioned on the ball transfer apparatus or on the rollers through inclination of portions of the conveyor and/or the ball transfer apparatus.